1N5408 cross section by laser

#fiberlaser #laser #electronics
I used a fiber laser to gently remove the encapsulant on a 1N5408 rectifier diode. I took a photo after each pass of the laser, then strung them together into a timelapse. Really cool effect. The construction - the two copper leads, which have ridges on them to prevent pulling out of the encapsulant, are bonded somehow to the little square semiconductor die in the middle (about 2mm square by 0.5mm thick). Then there's silicone rubber applied around the join, presumably to protect it from whatever encapsulant is used. I carefully scraped the silicone rubber away and tried shining a desk light on the junction - sure enough, it produced a tiny voltage, about 200mV at 10uA short circuit current ;-)

[@floriankosch7624]

Neat, I only ever opened those devices with overcurrent and the magic mist escaped

[@1diotwithideas]

Can you make that into a gif/nft you could sell it or give us for free 😇

[@imajeenyus42]

$1,000,000 sound ok?

[@JustinAlexanderBell]

@@imajeenyus42 Best I can do is a nickel and some lint.

[@nazkiyrt2079]

@@JustinAlexanderBell i can donate you some dimes